Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b8daa4e885731c…

MALICIOUS

PDF

33.7 KB Created: 2020-08-14 19:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47130e9bbaf8bea3bfe31fdefea161da SHA-1: f39895b2c872e6715ba152319c0e4fd0bea3d92a SHA-256: 03b8daa4e885731ce3aae71487062e260be90b10c4fc2b78f5493e667d8c486a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This, combined with the PDF_SEO_LINK_FARM heuristic indicating a link farm, suggests a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=marley+cooling+tower+parts+manual In PDF document text
    • http://files.hemp-aura.com/uploads/1/3/1/4/131437157/374289538a36e.pdfIn PDF document text
    • http://files.readitglobal.com/uploads/1/3/1/4/131409463/mawokena-volokodajilaze-zidojufibevala-jaxepizad.pdfIn PDF document text
    • http://gonew.churchofthewild2rivers.com/uploads/1/3/0/9/130969352/zijojogoxer-zasubifef.pdfIn PDF document text
    • http://paroboj.joannaruhl.com/uploads/1/3/0/7/130775129/346954.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2886/3397/files/veneduwixewusika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/jumupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/tinker_tailor_soldier_spy_screenplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/83635821058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/present_perfect_already_yet_just_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/futuvaxavujalixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/beneguridosobekew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/97570356806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/couper_page_par_page.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45D7 5452 bytes
SHA-256: 616c40ba84e670d4ddac7b0f7fad86ea42aa29ce83406351786730f349406a12
font_01_sfnt_off0000586e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586E 9864 bytes
SHA-256: 7f31a807e1564868ba3814136c8984c16b3a72c74780c2bfbbae0a9e0b4247ad

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